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HIBISCUS ROSA-SINENSIS FLOWER/LEAF EXTRACT.

Valuable CAS - / SKIN CONDITIONING, TONIC

Hibiscus Rosa-Sinensis Flower/Leaf Extract is a multi-functional botanical ingredient prized for its potent antioxidant, skin-conditioning, and mild exfoliating properties. Rich in natural AHAs, flavonoids, and anthocyanins, it helps to rejuvenate and protect the skin, promoting a smoother, more radiant complexion. Its gentle yet effective action makes it suitable for a wide range of skincare applications.

Summary

Antioxidant Skin-conditioning Tonic Exfoliant Antibacterial Wound-healing Anti-aging UV absorber (potential) Cleansing

Science

Mechanism of Action

This extract operates through several mechanisms: its high concentration of antioxidants, including flavonoids and anthocyanins, actively neutralizes free radicals, reducing oxidative stress and inflammation. Natural alpha-hydroxy acids (AHAs) facilitate mild exfoliation by dissolving dead skin cells, leading to improved skin texture and tone. Furthermore, it aids in skin conditioning by delivering hydration and nutrients, supports cellular regeneration and collagen synthesis for wound healing, and exhibits antibacterial action against common skin bacteria like *Staphylococcus aureus* and *Escherichia coli*. Some compounds may also offer potential UV protection and assist in managing hyperpigmentation, while natural saponins contribute to cleansing.

Research

Clinical Evidence

High confidence
Effective range 0.3–10%
Optimal

5%

Key findings

  1. 01 Demonstrated an 87.42% maximum DPPH free radical inhibitory effect in an antioxidant assay, showcasing significant radical scavenging activity.
  2. 02 Exhibited superior antioxidant action in lipid peroxidation activity when compared to vitamin C, indicating robust protective capabilities.
  3. 03 Ethanolic flower extracts increased cellular proliferation and collagen synthesis, significantly improving epithelialization and wound contraction in rat models, thus demonstrating potent wound-healing efficacy.
  4. 04 An ethanolic leaf extract displayed higher antibacterial potential against *Staphylococcus aureus* (9.66±0.577 inhibition) and *Escherichia coli* (13.33±0.577 inhibition) compared to a 1% concentration, highlighting its antimicrobial benefits.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 4 – 6
0 7 14

Stability

Hibiscus extracts are inherently slightly acidic, with observed pH values ranging from 4.1 to 5.8, which aids in maintaining the skin's natural acid mantle. For optimal efficacy and stability in formulations, a pH between 4.0 and 6.0 is recommended. Typical usage concentrations in cosmetic products are between 2-5% or 5-10%.

Conflicts

  • No specific incompatibilities are noted, but general formulation best practices recommend pre-testing ingredient combinations to monitor for any potential reactions.
  • Caution is advised when combining with potent essential oils due to potential for increased skin sensitivities.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

Generally recognized as safe for topical cosmetic use, posing a low risk of irritation or allergenicity. The Environmental Working Group (EWG) also reports minimal risk for cancer or allergies. While uncommon, individuals with sensitivities should perform a patch test to mitigate potential, albeit rare, side effects such as redness, itching, or rash.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

Hibiscus Rosa-Sinensis Flower/Leaf Extract is a valuable, versatile botanical offering significant antioxidant, exfoliating, and regenerative benefits suitable for all skin types, with a low risk of irritation and comedogenicity.

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